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(N0 Modl.)

A. z. BODA & L. KLOPSOH.

STEREOTYPE PLATE HOLDER.

No. 823,557. Patented Aug 4, 1885.

UNITED STATES PATENT A. ZELLAR BODA AND LOUIS KLOPSCH, OF NEW YORK, N. Y., ASSIGNORS TO SAID KLOPSCH.

STEREOTYPE-PLATE HOLDER.

SPECIFICATION forming part of Letters Patent No. 323,557, dated August 4, 1885.

(No model.)

To ctZZ whom it may concern:

Be it known that we, A. ZELLAR BODAv and LOUIS KLorsoI-I, citizens of the United States, residing at New York city, in the county and State of New York, have invented certain new and useful Improvements in Stereotype- Plate Holders, of which the following is a specification.

. W'e construct a holder for stercotypeplates which can be cheaply manuiactured and easily operated in inserting and removing the plates, and which will firmly hold the plates by a strong engagement along the central line, so as to prevent the buckling or tendency of the plates to rise in the center due to the pressure usually induced by locking up the form. We provide on the under side of the plate a dovetailed tongue adapted to match into corresponding grooves formed on the inner faces of a two-part baseblock. The duplex base-block is slightly beveled at its inner edge, so as to not only hold down the center of the plate by means of the dovetailed grooves engaging the flange on the plate, but also tends by the action of locking up to depress the central line of the base-block. The duplex base-blocks are correspondinglylower at the edges. The upper surfaces of the said base-blocks are also still further lowered along breadths a little within the edges, presenting inclines descending from the edge bearingsinward.

The accompanying drawings form part of the specification, and represent what we consider the best means of carrying out the in- Vention.

Figure 1 is avertical section showing the parts locked together by lateral pressure against the edges, applied in any ordinary or suitable manner. Fig. 2 shows the same with the base-blocks separated. to allow the stereo type plate to be applied and removed. Fig. 3 is an end View showing one of the baseblocks on a larger scale. Fig. l is a vertical section showing a modification.

Similar letters of reference indicate like parts in all the figures.

A is the stereotypeplate. B B are the two parts of the basc-block, each provided with a groove, 1), adapted to engage the dovetailed flange a on the plate A. The under faces of the downward projection a a are in the same plane as the under face of flange a and parallel with the upper face, so that the plates can be piled one upon the other compactly, and with the best economy of space. The inclines b b on the upper surface of the blocks 13 B serve advantageously in bringing the plate to its proper place when inserted between the blocks, the legs or edge projections a a, riding up these inclines as the blocks B B are brought together in locking, and facilitating the application of the plate, and insuring the proper position of all the parts. To remove the plates, it is only necessary to loosen the furniture and separate the blocks snfiiciently to allow the removal of the tongue a. The blocks may be leftin the form in this separated condition ready to receive the same or another plate. The blocks are not strictly rectangular in cross-section, but are slightly rhombic, as shown, somewhat exaggerated, in Fig. 3. This form induces a tendency to depress the bloehs in the center when the lateral pressure of locking up is broughtto bear against the sides. This insures a tight close grip between the parts a Z), and efficiently prevents any buckling or rising in the center.

Modifications may be made in the proportions without sacrificing the advantages of our invention. Ve can dispense with the rhombic form and depend upon the tongue a and grooves 71 I) to serve alone in properly locking and securing the plates against rising in the center or other displacement.

The form and size of the cavity on the under face of each base block may be varied. \Ve prefer the whole, as shown.

Parts of the invention can be used without the whole. By additional interlocking surfaces near the edges the stereotype-plate may be locked down to the base-blocks not only at the center,bnt also near each edge. Such modification is shown in section in Fig. i. The same movement of the baseblocks apart and together engages and disengages the plate in this modification.

o claim as our invention-- 1. A holder for stereotype-plates, made in sections and recessed to form clampingjaws near the central line, the two sections being In testimony whereof we have hereuntoset made slightly rhonibie in reverse directions, our hands, at New York city, N. Y., this 8th whereby, under pressure, they will tilt to day of April, 1885, in the presence of two sub- I 5 tighten the grip upon the plate and to hold scribing witnesses. 5 the center from rising, as set forth.

2. lhe duplex base-blocks B B, having the dovetailed grooves I) b and inclined upper surfaces, 1), in combination with each other A. ZELLAR BODA. LOUIS KLOPSOH.

and with a eorrespondingly-formcd stereotype \Vitnesses:

10 or electrotype plate, A, having the dovetailed CHARLES R. SEARLE,

tongue a, and the edge supports, a a, adapted M. F. BOYLE. for joint operation, as herein specified. 

